The optic disc has irregular peripapillary atrophic crescent (this is due
to failure of the retinal pigment epithelium and choroid to reach the disc
margin). There are thin white lines (termed lacquer crack caused by breaks
in Bruch's membrane) extending from the optic disc.
Other signs to look for:
- Foster-Fuch's spot (which is RPE hyperplasia following subretinal
neovascularization and haemorrhage)
- subretinal haemorrhage suggesting subretinal neovascularization
- presence of staphyloma is suggested by dipping of the vessels into
- look for any evidence of previous retinal detachment operation
(peripheral chorioretinal scars or indentation)
1. What is the definition of high myopia?Answer
2. What are the causes of myopia?